Black Lava Rocks for Fire Pit - 2 to 3 Inch 20 lbs - Gas Fireplace Stones - Volcanic Rock for Propane Fire Pit - Decorative Stone for Outdoor & Indoor Gas Fireplace

Here is the Standard Review for Black Lava Rocks. We did not like the look of the red lava rocks that came standard with our outdoor gas fire pit. The Black Lava rocks provided a modern aesthetic upgrade. Made from natural volcanic rock, these rocks are designed to withstand high temperatures without degrading. They won’t crack or fade, ensuring your fire pit looks beautiful season after season. Measuring 1 to 2 inches in size, these rocks are perfect for a variety of applications—whether you’re creating a cozy atmosphere in your propane fire pit or adding an elegant touch to your indoor gas fireplace. We use ours in our outdoor gas firepit. Simply spread the lava rocks evenly across the base of your fire pit or fireplace for an instant upgrade. The unique properties of lava rock allow for improved heat retention and distribution, ensuring you enjoy warmth from your fire pit long into the night.

The black lava rocks come in a bag still covered in dust from the rolling process. The dust can be cleaned off using an air compressor in an open area, and then the rocks can be lightly coated in mineral oil to bring out their color. Some rocks have more gray mineral than others making them a lighter color after the oil soaks in. Some of the rocks are almost completely black so if multiple bags are ordered the darker ones can be arranged on top of the lighter ones if that is the look you're going for. I've included a photo of freshly oiled vs non oiled rocks.

More gray than deep black color, but good enough to use on my little camp firepit.

I’m using them with a natural gas pit. They have discolored with burn marks. Wondering if I should have washed prior to use. Instructions were not present or I did not see them.

I really like the look of these 1-2" natural stones. They compliment the logs and retain heat which help emit additional heat when the gas is turned down. These are a good value and worth the money. I definitely recommend this product.

The quality of these lava rocks is great, they look nice, have a consistent size, and work well in a fire pit. The dark black color gives the fire feature a clean, finished look, and they handled the heat without cracking or popping. Each rock feels solid and well formed, and they give off that classic, natural look you want around a flame. They also arrived clean with very little dust, which made them easy to use right away. That said, I was surprised by how small the total amount looked once I opened the bag. It is definitely not the company’s fault since the weight is accurate, but the rocks are heavier than they appear, so the volume seems smaller than expected. If you are covering a larger area, you will probably need many bags, which would get expensive.

Works great around my fire pit

It gets 1 star because they are pretty. I’ve been burning these for 4 months and they have an awful chemical burn off smell. I’m going to replace them today. This is not something that will burn off with time. Also, I’ve had my fire pit for years and had glass in it, all I did was replace the glass with these rocks (vacuumed out any debris first) and it never smelled before. It’s 100% these rocks and whatever they do to them. It’s awful!

The contents I received were not lava rock, they were regular tumbled rocks which are quite heavy and were not what I was expecting for the fire pit I intended to use them in. They look nice and would be well suited for decorative use, but are heavy and expect a small quantity for the 20lb quantity.